What are the two key ingredients to natural selection

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Answer 1
Answer: too many of one gender which causes gender depopulation. and too big of a trait that wont survive. Dna mutation

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Which of the following is/are correct about light? *Light energy travels as waves. *Light always travels at the same speed. *Light cannot travel through liquids. * all of these
Which of the following is not an example of predation?
A widow's peak is a V-shaped area of the hairline in the center of the forehead. The allele for having a widow's peak is dominant to the allele for not having a widow's peak. If two parents do not have widow's peaks, what is the probability that their child will have a widow's peak? a. 0% b. 25% c. 50% d. 75% (PLEASE HELP AND EXPLAIN)!!!
While hiking in a rural area, you encounter a wetland and conclude that it's a swamp. Which feature helped you reach this conclusion? A. It contains a variety of trees and shrubs.B. It contains a number of carnivorous plants.C. It's located near a lake.D. It's located near the coast.
In 1967 a penicillin-resistant pneumonia, caused by Streptococcus pneumoniae and called pneumococcus, surfaced in a remote village in Papua, New Guinea. At about the same time American military personnel in southeast Asia were acquiring penicillin-resistant gonorrhea from prostitutes. By 1976, when the soldiers had come home, they brought the new strain of gonorrhea with them and physicians had to find new drugs to treat it. In 1983 a hospital-acquired intestinal infection caused by the bacterium Enterococcus faecium joined the list of bacteria that could not be killed by penicillin.Which of these BEST describes why certain bacteria have become resistant to penicillin?A) The penicillin in the 1970's was much weaker that the penicillin used today, thus it was not as effective. B) Penicillin was not effective in treating any bacterial diseases, so the doctors had to find new treatments. C) These new bacterial strains came out of the jungles and forests already equipped to be penicillin-resistant. D) Penicillin was so heavily prescribed by doctors that it led to certain, more fit, strains of bacteria to be able to survive. 2)

In a scientific investigation of lakes the depth of a lake is most likely to be measured in

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Answer:

In a scientific investigation of lakes the depth of a lake is most likely to be measured in meters.

Because the depth is the distance of an element from a horizontal reference plane and The unit of measure for distance according to the international system is the meter.

Either feet or meters, but each country/state is different.

What are sub climates

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 the imbetween climates, its not cold its not warm, it subartic, or sub saharran, hope this helps
Sub climates can be humid or hot.... Usually located near the equator.

On which axis will u place the names of the planets?

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I don't quite understand what you're asking here. A Planet's axis and its name have nothing to do with each other from my understanding.

explain why mesopotamia became a great place for civilization to grow ? what factors encouraged humans to settle and thrive i this part of the world?

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Answer: The Tigris-Euphrates river system, where Mesopotamia started, was an area prone to frequent flooding. The flooding deposited valuable silt onto the land and enabled crops to be grown and harvested in surplus. This was the first time farmers had an excess of what they needed. The surrounding land was devoid of most other raw materials, such as wood, stone and metal. To get these materials, the early Mesopotamians resorted to trade. At these gathering hubs, people began constructing buildings, which formed the basis for the first cities to appear and helped civilizations continue to develop.

Where is a hurricane most likely to form

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 They form near the equator over warm ocean waters.

Which of the following populations would be least likely to survive a change in its ecosystem? A. brown bears that can eat a variety of different kinds of food B. koalas that eat only eucalyptus leaves C. grasses that can grow in normal or contaminated soil D. bacteria that can grow in both hot and cold environments

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koalas that eat only eucalyptus leaves C. would least likely survive in a change of ecosystem.

What are the Kaolas?

The koala or koala bear refer to arboreal herbivorous marsupial that are majorly found in Australia. It is the only remaining representative of the family Phascolarctidae and its closest living relatives are the wombats.

They survive in most climate.

Therefore, koalas that eat only eucalyptus leaves C. would least likely survive in a change of ecosystem.

Learn more about Koala from the link below.

brainly.com/question/15900498

b. defiantly b. because it can survive in most climates.